Advanced

Interference-free OFDM embedding of wake-up signals for low-power wake-up receivers

Edfors, Ove LU and Mazloum, Nafiseh (2020) In IEEE Transactions on Green Communications and Networking 4(3). p.669-677
Abstract
The use of ultra-low power wake-up receivers (WuRx) can significantly reduce idle listening energy cost. To tailor a WuRx scheme to orthogonal frequency division multiplexing (OFDM) based systems, such as LTE-MTC or IEEE 802.11, the wake-up signal (WUS) also needs to follow OFDM principles to avoid interfering with other transmissions in the same shared bandwidth. Here, we address this particular issue and propose an approach where the OFDM transmitter is modified to also transmit WUSs designed for non-coherent low-power WuRxs, on a subset of the carriers, thus embedding the WUS correctly and ensuring orthogonality. The approach is evaluated for different system parameters and channel conditions. Its applicability across a wide range of... (More)
The use of ultra-low power wake-up receivers (WuRx) can significantly reduce idle listening energy cost. To tailor a WuRx scheme to orthogonal frequency division multiplexing (OFDM) based systems, such as LTE-MTC or IEEE 802.11, the wake-up signal (WUS) also needs to follow OFDM principles to avoid interfering with other transmissions in the same shared bandwidth. Here, we address this particular issue and propose an approach where the OFDM transmitter is modified to also transmit WUSs designed for non-coherent low-power WuRxs, on a subset of the carriers, thus embedding the WUS correctly and ensuring orthogonality. The approach is evaluated for different system parameters and channel conditions. Its applicability across a wide range of OFDM-based systems is examined. (Less)
Please use this url to cite or link to this publication:
author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Transactions on Green Communications and Networking
volume
4
issue
3
pages
669 - 677
publisher
Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85092739889
ISSN
2473-2400
DOI
10.1109/TGCN.2020.2970312
language
English
LU publication?
yes
id
9b5a31c9-d6f6-48f8-ae81-2c8a423fc317
date added to LUP
2020-09-17 09:58:08
date last changed
2021-02-17 04:07:13
@article{9b5a31c9-d6f6-48f8-ae81-2c8a423fc317,
  abstract     = {The use of ultra-low power wake-up receivers (WuRx) can significantly reduce idle listening energy cost. To tailor a WuRx scheme to orthogonal frequency division multiplexing (OFDM) based systems, such as LTE-MTC or IEEE 802.11, the wake-up signal (WUS) also needs to follow OFDM principles to avoid interfering with other transmissions in the same shared bandwidth. Here, we address this particular issue and propose an approach where the OFDM transmitter is modified to also transmit WUSs designed for non-coherent low-power WuRxs, on a subset of the carriers, thus embedding the WUS correctly and ensuring orthogonality. The approach is evaluated for different system parameters and channel conditions. Its applicability across a wide range of OFDM-based systems is examined.},
  author       = {Edfors, Ove and Mazloum, Nafiseh},
  issn         = {2473-2400},
  language     = {eng},
  number       = {3},
  pages        = {669--677},
  publisher    = {Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Green Communications and Networking},
  title        = {Interference-free OFDM embedding of wake-up signals for low-power wake-up receivers},
  url          = {http://dx.doi.org/10.1109/TGCN.2020.2970312},
  doi          = {10.1109/TGCN.2020.2970312},
  volume       = {4},
  year         = {2020},
}